---------------------------------------------------------- Stratus-List Digest Archive --- Total Messages Posted Sun 11/14/04: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:41 AM - Belt rumble vibration (Phil Raker) 2. 08:01 AM - Re: Belt rumble vibration (The Meiste's) 3. 02:30 PM - Re: Belt rumble vibration (gary) ________________________________ Message 1 _____________________________________ Time: 07:41:56 AM PST US DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; b=SbJgG3+1vVyDDqYAyXFjH+eTAf6WjTaG8oVjuw+zoai6ApdRtKcsK1Do2ooRhNB+bAlHfLF3/3D3a1GMBbSEMltiNTIOBp1gdXu87dfP26QJ8t4iU+cQf2gPXPHpGFQbZvC+unWRuC56hQNwT+pLrHBhseCKWLpLWnlth6afquc= ; From: Phil Raker Subject: Stratus-List: Belt rumble vibration --> Stratus-List message posted by: Phil Raker Larry, If, as you say, the vibration is only in a fairly narrow RPM band, and if that band isn't at a normal operating speed (I doubt that you'd cruise the Stratus for very long at 25-2800), then perhaps the solution is a yellow band on the tachometer. I remember some others writing about a similar issue a year or so ago. Did you check the archives? As I recall, the conclusion was that the belt vibrated when run at certain speeds - not full speed or cruise settings. Doc, it hurts when I hit my head on the wall. -> So don't hit your head on the wall. My engine vibrates in a certain RPM range. -> So don't run it in that range. It sounds like an over-simplification, but that may be the best solution, especially if it's smooth at all other speeds. Phil Raker N556P HDS/Stratus ~85% completed Subject: Stratus-List: Belt rumble vibration --> Stratus-List message posted by: "Larry McFarland" > > It doesn't change when running off the A-distributor ignition or B-flywheel > ignition, so perhaps it's the belt or my mixture. > __________________________________ www.yahoo.com _-===================================================================== _-_-= -- Please Support Your Lists This Month -- _-= (And Get Some AWESOME FREE Gifts!) _-_-= November is the Annual List Fund Raiser. 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As nothing I found makes it go away. Kelly _-===================================================================== _-_-= -- Please Support Your Lists This Month -- _-= (And Get Some AWESOME FREE Gifts!) _-_-= November is the Annual List Fund Raiser. Click on the _-= Contribution link below to find out more about this _-= year's Terrific Free Incentive Gifts provided by the _-= The Builder's Bookstore www.buildersbooks.com! _-_-= List Contribution Web Site _-_-= http://www.matronics.com/contribution _-_-= Thank you for your generous support! _-= -Matt Dralle, List Admin. _-_-===================================================================== _-= - The Stratus-List Email Forum - _-= This forum is sponsored entirely through the Contributions _-= of List members. You'll never see banner ads or any other _-= form of direct advertising on the Matronics Forums. _-===================================================================== _-= List Related Information _-= Post Message: stratus-list@matronics.com _-= UN/SUBSCRIBE: http://www.matronics.com/subscription _-= List FAQ: http://www.matronics.com/FAQ/Stratus-List.htm _-= Search Engine: http://www.matronics.com/search _-= 7-Day Browse: http://www.matronics.com/browse/stratus-list _-= Browse Digests: http://www.matronics.com/digest/stratus-list _-= Live List Chat: http://www.matronics.com/chat _-= Archives: http://www.matronics.com/archives _-= Photo Share: http://www.matronics.com/photoshare _-= List Specific: http://www.matronics.com/stratus-list _-= Other Lists: http://www.matronics.com/emaillists _-= Trouble Report http://www.matronics.com/trouble-report _-= Contributions: http://www.matronics.com/contribution _-===================================================================== ________________________________ Message 3 _____________________________________ Time: 02:30:02 PM PST US From: "gary" Subject: Re: Stratus-List: Belt rumble vibration --> Stratus-List message posted by: "gary" you could run it without the prop to baseline the vibration level. if it's rough, work on the engine, if it's smooth, work on the prop/spinner. dynamic balance is well worth it and i found that getting every blade exactly the same helps. takes a little longer to fiddle with prop when adjusting pitch but i think it pays off. if you get a balance, make sure you put spinner on. Gary Krysztopik Pelican PL - N522GK Stratus Subaru EA-81 Newport, RI http://members.efortress.com/flyink/index.html ----- Original Message ----- From: "Larry McFarland" Subject: Stratus-List: Belt rumble vibration > --> Stratus-List message posted by: "Larry McFarland" > > > Hi guys, > I've been chasing a pulse thinking the engine was missing > because it vibrates a bit when it's cold and the pulse is felt until > things warm > up. After replacing the rotor, cap, plugs and checking coils and wires, > it > runs well warm, but there is still a rumble, vibration band at 2500 to > 2800 rpm > that seems a bit intense. Above and below that band everything sounds > smooth. > Am I looking at the difference between the seasonal warm of recent and the > cold > which is only 30-40 degrees cooler? It doesn't change when running off > the A-distributor > ignition or B-flywheel ignition, so perhaps it's the belt or my mixture. > Still a 60-70 degree > difference in EGTs, right being higher. Belt is snug to spec and the prop > is tracking > within 1/32" each blade, but there's still more vibration than I'd like to > fly with. > > Any ideas on this? I feel like I've missed something here. > > Larry McFarland - 601HDS - Stratus at 45 hours and holding. > > > _-===================================================================== > _-> _-= -- Please Support Your Lists This Month -- > _-= (And Get Some AWESOME FREE Gifts!) > _-> _-= November is the Annual List Fund Raiser. 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